import type { Context } from "hono";
import type { IssueEvent, TaskRequest } from "../types.js";
import type { TaskQueue } from "../queue.js";
import type { Config } from "../config.js";

const LABEL_TO_TASK: Record<string, string> = {
  "ready-for-architecture": "architect",
  "ready-for-development": "develop",
  "ready-for-testing": "test",
  "ready-for-deployment": "devops",
};

/** Tasks that should use the review bot account. */
const REVIEW_TASKS = new Set(["test"]);

/**
 * Issue labeled → SDLC stage transition.
 *
 * Replaces: issue-stage-transition.json
 */
export function issueLabel(config: Config, queue: TaskQueue) {
  return async (c: Context) => {
    const event = await c.req.json<IssueEvent>();

    console.log(`[issue-label] action="${event.action}" issue=#${event.issue.number} labels=[${event.issue.labels.map((l) => l.name).join(", ")}]`);

    if (!["labeled", "label_updated", "created"].includes(event.action)) {
      return c.text("ignored: not a label event", 200);
    }

    const labels = event.issue.labels.map((l) => l.name);
    const [org, repo] = event.repository.full_name.split("/");

    let taskType: string | null = null;
    for (const [label, task] of Object.entries(LABEL_TO_TASK)) {
      if (labels.includes(label)) {
        taskType = task;
        break;
      }
    }

    if (!taskType) {
      return c.text("ignored: no matching stage label", 200);
    }

    const giteaToken = REVIEW_TASKS.has(taskType)
      ? config.giteaReviewToken
      : config.giteaDevToken;

    const task: TaskRequest = {
      taskType,
      issueNumber: event.issue.number,
      giteaOrg: org,
      giteaRepo: repo,
      repoCloneUrl: event.repository.clone_url,
      giteaToken,
    };

    const queued = await queue.enqueue(task, {
      useReviewAccount: false,
      body: `🤖 SDLC stage transition: **${taskType}** — workspace queued.`,
    });

    return c.json({ ok: true, queued });
  };
}